1/4 in. x 2-3/4 in. Caliburn T-30 Handy-Pak Star-Drive Hex-Head Coarse Sharp-Point Climatek Concrete Screws (50 Pack) | GRK-57159

GRK Fasteners Caliburn Concrete Screws are ideal for wood-to-concrete framing, ledger installations, or securing structural components where a durable, removable anchor is needed. The aggressive thread allows for easy insertion while minimizing installation fatigue, and the screws can be backed out and re-driven without loss of performance. With AC257 approval, the Caliburn screw offers dependable performance in treated lumber and corrosive environments alike.

• Recessed star drive prevents stripping, with 6 points of contact
• Aggressive Heavy duty threads lock into concrete and can be removed and reinserted without screw damage
• Countersinking Bugle Head locks wood to concrete for complete installation and effective anchoring
• Caliburn PH pan head, which is ideal for an exposed finished look including installation of electrical boxes
• Patented thread design adds strength and reduces required installation torque